// 底部
.footer {
  width: 100vw;
  height: 3rem;
  display: flex;
  align-items: center;
  justify-content: space-around;
  position: fixed;
  bottom: 0;
  width: 100%;
  margin: auto;
  border-top: 0.01rem solid #333;
  background: #fff;
  .avatar {
    --size: 2rem;
  }
}
